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Table 1 Descriptive data of inventory plots (Germany)

From: Tree species richness enhances stand productivity while stand structure can have opposite effects, based on forest inventory data from Germany and the United States of America

  R d dq CVd SDI Temp Precip P
mean 2.02 27.14 28.59 0.32 1158.02 8.32 842.12 12.24
sd 1.06 12.2 12.18 0.19 603.3 0.93 250.52 8.96
se 0 0.05 0.05 0 2.54 0 1.05 0.04
min 1 7 7 0 38.67 0.31 467 0
max 9 165 165 1.46 5375.02 10.83 1984 103.59
n 56,449
  1. R number of species, d diameter at breast height (cm), dq quadratic mean diameter (cm), CVd coefficient of variation of diameter, SDI stand density index, Temp mean annual temperature, Precip annual precipitation, P stand productivity (m3∙ha−1∙yr.−1)